Version 0.2 - Change date/time display to match the new source (feather RTC !).

Update doc, comments, licence, version...

raspberry/python/mqtt2epaper.py

@@ -1,9 +1,25 @@
-# -*- coding: utf-8 -*-
+#!/usr/bin/python3
+# -*- coding: UTF8 -*-
+
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
 """
 Display data from MQTT broker on ePaper screen
 
 @author: arofarn
 """
+__version__ = 0.2
 
 ###########
 # IMPORTS #
@@ -25,11 +41,10 @@ mqtt_client_id = "epaper_display"
 white = 255
 black = 0
 
-
-"""
-Update ePaper Display
-"""
 def update_epd():
+    """
+    Update ePaper Display
+    """
     #rotation de l'image de 90° + 180° si le paramètre epd_rotate est différent de 0
     # la translation permet de rattraper un petit décalage en cas de rotation de 90+180°
     screen = image.rotate(90 + (epd_rotate * 180), expand=True, translate=(-6*epd_rotate, 0))
@@ -41,10 +56,10 @@ def update_epd():
 # CALLBACKS #
 #############
 
-"""
-Callback pour la connection au MQTT : souscriptions aux topics
-"""
 def on_connect(client, userdata, flags, rc):
+    """
+    Callback pour la connection au MQTT : souscriptions aux topics
+    """
     print(mqtt.connack_string(rc))
     if rc == 0:
         print("Subscribing to %s ..." % mqtt_topic)
@@ -53,11 +68,12 @@ def on_connect(client, userdata, flags, rc):
                         )
         print("OK")
 
-"""
+
-Callback de gestion des messages arrivant au MQTT :
-affichage et enregistrement en base de données
-"""
 def on_message(client, userdata, msg):
+    """
+    Callback de gestion des messages arrivant au MQTT :
+    affichage et enregistrement en base de données
+    """
     top=msg.topic[len(mqtt_topic)-1:].strip()
     subtopics = top.split("/")
 
@@ -65,7 +81,6 @@ def on_message(client, userdata, msg):
         payload = msg.payload.decode()
         val = json.loads(payload)
 
-
         #Test présence et cohérence de la valeur
         try:
             val['value'] = float(val['value'] )
@@ -85,38 +100,35 @@ def on_message(client, userdata, msg):
         print(val)
         if val['type'] in coord_type:
             #erase former text
-            draw.rectangle(coord_type[val['type']] + (coord_type[val['type']][0] + 112,
+            draw.rectangle(coord_type[val['type']] + (coord_type[val['type']][0] + 112, coord_type[val['type']][1] + 20), fill=white)
-                                                      coord_type[val['type']][1] + 20),
-                           fill=white)
             #draw new values
             draw.text(coord_type[val['type']],
                       "{:6.1f}{}  ".format(val['value'], val['unit']),
                       font=font20_bold,
                       fill=black)
+            update_epd()
             
-"""
+    # Print feather's date and time on epaper display
-Callback managing date and time from MQTT broker
+    elif subtopics[0] == "SYS":
-"""
-def on_message_date(client, userdata, msg):
         payload = msg.payload.decode()
-    print("Date : " + payload)
+        val = json.loads(payload)
-
+        if val['type'] == "TIME":
             try:
                 #Mise en forme de la date et heure reçu pour fuseau horaire configuré
-        dt_texte = datetime.strftime(datetime.strptime(payload, "%H:%M:%S %d/%m/%Y") + TimeZone.utcoffset(None), "%d/%m/%Y %H:%M:%S")
+                dt_texte = datetime.strftime(datetime.strptime(val['value'], "%Y/%m/%d_%H:%M:%S") + TimeZone.utcoffset(None),
+                                             "%d/%m/%Y %H:%M:%S")
             except:
                 dt_texte = payload
-
+            print(dt_texte)
-    #Affichage du résultat
             draw.rectangle((0, 34, epd2in13.EPD_HEIGHT, 48), fill=white)
             draw.text((0, 34), dt_texte, font=font14, fill=black)
             update_epd()
 
-"""
-Update display with info from camera (camera shooting new photo or name of the
-last photo)
-"""
 def on_message_camera(client, userdata, msg):
+    """
+    Update display with info from camera (camera shooting new photo or name of the
+    last photo)
+    """
     pl = msg.payload.decode()
     print("{} : {} ({})".format(msg.topic, pl, type(pl)))
 
@@ -132,10 +144,11 @@ def on_message_camera(client, userdata, msg):
         draw.text((0, 106), "Last: " + pl, font=font14, fill=black)
         update_epd()
 
-"""
+
-Callback de déconnexion au broker MQTT
-"""
 def on_disconnect(client, userdata, msg):
+    """
+    Callback de déconnexion au broker MQTT
+    """
     if msg != 0:
         print("Déconnexion imprévu : %s" % msg)
     exit()
@@ -168,8 +181,15 @@ draw = ImageDraw.Draw(image)
 
 #Draw basic text and frame :
 draw.rectangle((0, 0, epd2in13.EPD_HEIGHT, 18), fill=black)
-draw.text((60, 1), "Projet Camétéo", font=font16_bold, fill=white)
+draw.text((60, 1),
-draw.text((0, 19), "{} : IP= {}".format(socket.gethostname(), netifaces.ifaddresses('wlan0')[2][0]['addr']), font = font12, fill=black )
+          "Projet Camétéo",
+          font=font16_bold,
+          fill=white)
+draw.text((0, 19),
+          "{} : IP= {}".format(socket.gethostname(),
+                               netifaces.ifaddresses('wlan0')[2][0]['addr']),
+          font = font12,
+          fill=black )
 draw.line((0,49,epd2in13.EPD_HEIGHT, 49), fill=black)
 draw.line((0,71,epd2in13.EPD_HEIGHT, 71), fill=black)
 draw.line((0,93,epd2in13.EPD_HEIGHT, 93), fill=black)
@@ -194,7 +214,7 @@ mqtt_client.on_connect = on_connect
 mqtt_client.on_message = on_message
 mqtt_client.on_disconnect = on_disconnect
 
-mqtt_client.message_callback_add("huzzah0/NTP/date", on_message_date)
+#mqtt_client.message_callback_add("feather0/NTP/date", on_message_date)
 mqtt_client.message_callback_add(camera_mqtt_topic + "/#", on_message_camera)
 
 print(mqtt_host + ":" + str(mqtt_port))

raspberry/python/uart2mqtt.py

@@ -17,7 +17,7 @@
 """
 Transmit data from UART (GPIO) to MQTT broker
 """
-__version__ = "0.1"
+__version__ = "0.2"
 
 # Dictionnary of data types and units
 data_type = {'cput' :   "AT",